Question

What is the ratio that relates the opposite side of an angle to the hypotenuse in a right-angled triangle?

• A. $\cos \theta$
• B. $\tan \theta$
• C. $\sin \theta$
• D. $\sec \theta$

Answer 1

The correct option is C

$\sin \theta$

The ratio, sine is the ratio of the opposite side and the hypotenuse

$\sin \theta =\frac{\text{opposite side}}{\text{hypotenuse}}$

Thus, the ratio that relates the opposite side of an angle to the hypotenuse in a right-angled triangle is $\sin \theta$.